{
  "$schema": "https://metadata.click/.well-known/metadata-click.json",
  "name": "metadata.click browser engine support matrix",
  "version": "2026.07.11",
  "dateModified": "2026-07-11",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "methodology": {
    "scope": "Feature-level conformance of the current public browser engine using synthetic fixtures and re-inspection. This is not a claim of coverage for every camera, editor, malformed file, or proprietary extension.",
    "visualPayloadProof": "SHA-256 is calculated over encoded image payload bytes: JPEG scan data, PNG image-data chunks, or WebP image chunks. The proof does not claim that the complete file is byte-for-byte identical."
  },
  "formats": [
    {
      "format": "JPEG",
      "mimeType": "image/jpeg",
      "inspection": "supported",
      "cleaning": "supported",
      "rightsWriting": "supported",
      "visualPayloadProof": "supported",
      "coveredStructures": ["EXIF", "GPS IFD", "standard XMP", "recognized C2PA/JUMBF", "IPTC/Photoshop application data"],
      "safeMode": "Rebuilds orientation-only EXIF when orientation is needed; guards rendering-related structures."
    },
    {
      "format": "PNG",
      "mimeType": "image/png",
      "inspection": "supported",
      "cleaning": "supported",
      "rightsWriting": "supported",
      "visualPayloadProof": "supported",
      "coveredStructures": ["eXIf", "iTXt", "tEXt", "zTXt", "standard XMP", "recognized C2PA"],
      "safeMode": "Preserves image data, color and rendering chunks while removing supported metadata chunks."
    },
    {
      "format": "WebP",
      "mimeType": "image/webp",
      "inspection": "supported",
      "cleaning": "supported",
      "rightsWriting": "not-yet-supported",
      "visualPayloadProof": "supported",
      "coveredStructures": ["EXIF", "XMP", "recognized C2PA", "RIFF trailing payload"],
      "safeMode": "Preserves encoded image and animation chunks and updates container flags after metadata removal."
    },
    {
      "format": "DNG / Apple ProRAW",
      "mimeType": "image/x-adobe-dng",
      "inspection": "supported",
      "cleaning": "intentionally-disabled",
      "rightsWriting": "not-supported",
      "visualPayloadProof": "not-applicable",
      "coveredStructures": ["TIFF/DNG IFD metadata", "GPS", "camera and software tags", "XMP where discoverable"],
      "safeMode": "Read-only because RAW metadata can be required for rendering, gain maps, previews, profiles and color science."
    }
  ],
  "knownLimits": [
    "Metadata absence does not prove that an image is human-made or anonymous.",
    "Cleaning does not remove visible watermarks, durable fingerprints, classifier signals or platform-side records.",
    "HEIC, HEIF and AVIF are not supported in the current public engine.",
    "Keep the original when provenance, authorship, legal evidence or archival fidelity matters."
  ],
  "conformanceResults": "https://metadata.click/metadata-lab/conformance-results.csv",
  "canonicalUrl": "https://metadata.click/metadata-lab/"
}